Global Patent Index - EP 3849168 A4

EP 3849168 A4 20211110 - DYNAMIC VISION SENSOR

Title (en)

DYNAMIC VISION SENSOR

Title (de)

DYNAMISCHER SICHTSENSOR

Title (fr)

CAPTEUR DE VISION DYNAMIQUE

Publication

EP 3849168 A4 20211110 (EN)

Application

EP 19864611 A 20190910

Priority

  • CN 201811151126 A 20180929
  • CN 2019105187 W 20190910

Abstract (en)

[origin: EP3849168A1] This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed. In this way, redundant background information can be reduced when the camera is moving.

IPC 8 full level

H04N 5/225 (2006.01)

CPC (source: CN EP US)

H04N 23/54 (2023.01 - CN); H04N 23/57 (2023.01 - CN); H04N 25/00 (2023.01 - EP); H04N 25/47 (2023.01 - EP); H04N 25/50 (2023.01 - US); H04N 25/70 (2023.01 - CN); H04N 25/707 (2023.01 - EP); H04N 25/75 (2023.01 - US); H04N 25/78 (2023.01 - CN EP)

Citation (search report)

  • [XYI] WO 2018039638 A1 20180301 - MEMS START LLC [US]
  • [XA] NAGANUMA H ET AL: "A 37 x 37 pixels artificial retina chip with edge enhancement function for 3-D stacked fully implantable retinal prosthesis", BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE (BIOCAS), 2012 IEEE, IEEE, 28 November 2012 (2012-11-28), pages 212 - 215, XP032443137, ISBN: 978-1-4673-2291-1, DOI: 10.1109/BIOCAS.2012.6418459
  • [Y] GUERRERO FEDERICO NICOLAS ET AL: "Analysis and Simple Circuit Design of Double Differential EMG Active Electrode", IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS, IEEE, US, vol. 10, no. 3, 1 June 2016 (2016-06-01), pages 787 - 795, XP011609060, ISSN: 1932-4545, [retrieved on 20160304], DOI: 10.1109/TBCAS.2015.2492944
  • See also references of WO 2020063332A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3849168 A1 20210714; EP 3849168 A4 20211110; CN 110971792 A 20200407; CN 110971792 B 20210813; US 11310445 B2 20220419; US 2021218913 A1 20210715; WO 2020063332 A1 20200402

DOCDB simple family (application)

EP 19864611 A 20190910; CN 201811151126 A 20180929; CN 2019105187 W 20190910; US 202117215729 A 20210329